tl;dr: check that everything is working and that everybody is setup and know how to do their role. Secondary job: replace any role that is missing or that doesn't arrive in time

Make sure that all cameras are sending video output properly for Vocto. If any of them don't show up on Vocto, try to restart the graphical interface. A script should be set to restart everything properly.

Make sure that all volunteers show up at least 10 minutes before the talk. If any of them do not show up by that time, someone from the audience with proper abilities (preferably from the video team) should replace the absent person.